Home / 80,782.14-111,441.06-56,921.94

Finding the Fourth Proportional to 80,782.14, 111,441.06 and 56,921.94

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Solution

The fourth proportional to 80,782.14, 111,441.06 and 56,921.94 is: 78,525.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,782.14 : 111,441.06 = 56,921.94 : x
  2. Step 2: Convert to fraction form
    80,782.14/111,441.06 = 56,921.94/x
  3. Step 3: Cross multiply
    80,782.14x = 111,441.06 × 56,921.94
  4. Step 4: Simplify right side
    80,782.14x = 6,343,441,330.86
  5. Step 5: Solve for x
    x = 6,343,441,330.86/80,782.14
  6. Step 6: Final answer
    x = 78,525.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.